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LibWeb: Support range delection accross nodes with shared parent.

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asynts 2020-12-02 13:41:58 +01:00 • committed by Andreas Kling
parent 43dc47a494
commit e96faea1a2
Notes: sideshowbarker 2024-07-19 00:57:16 +09:00
2 changed files with 52 additions and 21 deletions
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55
Libraries/LibWeb/Page/EditEventHandler.cpp
View file

@ -31,6 +31,7 @@
#include <LibWeb/Page/Frame.h>
#include <LibWeb/DOM/Document.h>
#include <LibWeb/Dump.h>
#include <LibWeb/Layout/InitialContainingBlockBox.h>
#include "EditEventHandler.h"
@ -39,21 +40,55 @@ namespace Web {
void EditEventHandler::handle_delete(DOM::Range range)
{
if (range.start().node() != range.end().node())
TODO();
// FIXME: Find a better way of updating the selection and cursor position.
if (is<DOM::Text>(*range.start().node())) {
auto& node = downcast<DOM::Text>(*range.start().node());
if (range.start().node() != range.end().node()) {
if (range.start().node()->parent() == range.end().node()->parent()) {
m_frame.document()->layout_node()->set_selection({});
m_frame.cursor_position().set_offset(range.start().offset());
StringBuilder builder;
// Remove all intermediate nodes.
auto* current = range.start().node()->next_sibling();
while (current != range.end().node()) {
auto* next = current->next_sibling();
current->parent()->remove_child(*current);
current = next;
}
builder.append(node.data().substring_view(0, range.start().offset()));
builder.append(node.data().substring_view(range.end().offset()));
node.set_data(builder.to_string());
if (!is<DOM::Text>(*range.start().node()) || !is<DOM::Text>(*range.end().node()))
TODO();
m_frame.document()->layout_node()->set_selection({});
node.invalidate_style();
// Join remaining text together.
StringBuilder builder;
builder.append(downcast<DOM::Text>(range.start().node())->data().substring_view(0, range.start().offset()));
builder.append(downcast<DOM::Text>(range.end().node())->data().substring_view(range.end().offset()));
range.start().node()->parent()->remove_child(*range.end().node());
downcast<DOM::Text>(range.start().node())->set_data(builder.to_string());
range.start().node()->invalidate_style();
} else {
TODO();
}
} else {
if (is<DOM::Text>(*range.start().node())) {
m_frame.document()->layout_node()->set_selection({});
m_frame.cursor_position().set_offset(range.start().offset());
auto& node = downcast<DOM::Text>(*range.start().node());
StringBuilder builder;
builder.append(node.data().substring_view(0, range.start().offset()));
builder.append(node.data().substring_view(range.end().offset()));
node.set_data(builder.to_string());
node.invalidate_style();
}
}
// FIXME: We need to remove stale layout nodes when nodes are removed from the DOM. Currently,
// this is the only way to get these to disappear.
m_frame.document()->force_layout();
}
void EditEventHandler::handle_delete(DOM::Position position)

18
Libraries/LibWeb/Page/EventHandler.cpp
View file

@ -353,25 +353,21 @@ bool EventHandler::handle_keydown(KeyCode key, unsigned modifiers, u32 code_poin
m_edit_event_handler->handle_delete(range);
return true;
}
} else {
m_edit_event_handler->handle_delete(range);
m_edit_event_handler->handle_insert(m_frame.cursor_position(), code_point);
return true;
}
// FIXME: Check if this code point is in the printable character range.
m_edit_event_handler->handle_delete(range);
m_edit_event_handler->handle_insert(m_frame.cursor_position(), code_point);
return true;
}
if (m_frame.cursor_position().is_valid() && m_frame.cursor_position().node()->is_editable()) {
if (key == KeyCode::Key_Backspace) {
m_edit_event_handler->handle_delete(m_frame.cursor_position());
return true;
} else {
m_edit_event_handler->handle_insert(m_frame.cursor_position(), code_point);
return true;
}
// FIXME: Check if this code point is in the printable character range.
m_edit_event_handler->handle_insert(m_frame.cursor_position(), code_point);
return true;
}
return false;